linux-kernel - Re: [Ksummit-2010-discuss] checkpoint-restart: naked patch

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Message-ID: <20101104160428.GA10656@sundance.ccs.neu.edu>
Date:	Thu, 4 Nov 2010 12:04:28 -0400
From:	Gene Cooperman <gene@....neu.edu>
To:	Tejun Heo <tj@...nel.org>
Cc:	Nathan Lynch <ntl@...ox.com>, Christoph Hellwig <hch@....de>,
	Oren Laadan <orenl@...columbia.edu>,
	ksummit-2010-discuss@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, kapil@....neu.edu, gene@....neu.edu
Subject: Re: [Ksummit-2010-discuss] checkpoint-restart: naked patch

Yes, we are working with Condor to have them validate DMTCP.  Time will tell.
							- Gene

On Thu, Nov 04, 2010 at 08:36:16AM +0100, Tejun Heo wrote:
> Hello,
> 
> On 11/04/2010 02:47 AM, Nathan Lynch wrote:
> >>   In this case whitelisting the allowed
> >> state by requiring special APIs for all I/O (or even just standard
> >> APIs as long as they are supposed by the C/R lib you're linked against)
> >> is the more pragmatic, and I think faithful aproach.
> > 
> > I don't think users will go for it.  They'll continue to use dodgy
> > out-of-tree kernel modules and/or LD_PRELOAD hacks instead of porting
> > their applications to a new library.  I think a C/R library is an
> > "ideal" solution, but it's one that nobody would use - especially in
> > HPC, unless the library somehow provides better performance.
> 
> I hear that there are plans to integrate one of the userland
> snapshotting implementations with HPC workload manager.  ISTR the
> combination to be condor + dmtcp but not sure.  I think things like
> that make a lot of sense.  Scientists writing programs for HPC
> clusters already work in given frameworks and what those applications
> do and how to recover are pretty well confined/defined.  If you
> integrate snapshotting with such frameworks, it becomes pretty easy
> for both the admins and users.
> 
> I'll talk about other issues in the reply to Oren's email.
> 
> Thanks.
> 
> -- 
> tejun
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